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Brand voice AI

Create consistent brand audio for ads, explainers, courses, product videos, and support content.

One designed voice can ship across campaigns, docs, and customer touchpoints.

Design a voice See pricing

How it works

  1. 1

    Design the brand voice

    Prompt the voice's tone, age, energy, and delivery style.

  2. 2

    Use it everywhere

    Render long-form Cast audio or realtime Speak clips from the same account.

  3. 3

    Keep economics simple

    Voice creation is free; synthesis is priced by generated audio minutes.

Built on

CastCinematic, emotional long-form TTS for podcasts, narration, and audiobooks.SpeakSpeak - text-to-speech (TTS) that starts in milliseconds.

Common questions

How do I design a brand voice?

Prompt the voice's tone, age, energy, and delivery style, then use it across ads, explainers, courses, product videos, and support content.

Can one voice cover both long-form and realtime?

Yes. Render long-form Cast audio or realtime Speak clips from the same account.

What does voice creation cost?

Voice creation is free; synthesis is priced by generated audio minutes.

Choose how you want to start.

Use an instant sandbox key for the API, or open Agents Beta and build without code. Sandbox usage never bills. Live keys require available credit.

Build with the API Launch an Agent

Agents is live in beta. Sandbox keys have daily limits and never touch billing.